Getting XML from URL in Android shows null error

Question

I am trying to get an XML file from a url using HTTP Get method in Android. When I enter the url in my browser I get the XML file. However when I try and use HttpURLConnection in Android, the input stream is always null. I am trying to figure out the problem but in vain. I would like some help in understanding the problem.
Here are my codes:
XML File

<?xml version="1.0" encoding="UTF-8"?>
<item>
    <log>27.1823000000</log>
    <lat>88.5012200000</lat>
</item>

Async Task

private class GetOnlineData extends AsyncTask<Void, Void, String>{

        @Override
        protected String doInBackground(Void... voids){
            String latlog=null;

            // Accessing link to obtain XML file
            try{
                URL url = new URL(link);
                HttpURLConnection htc = (HttpURLConnection) url.openConnection();
                inputStream = htc.getInputStream();
            }catch(Exception e){}

            // Parsing XML data from input stream
            if(inputStream!=null){
                try {
                    DocumentBuilderFactory xmlparser = DocumentBuilderFactory.newInstance();
                    DocumentBuilder dBuilder = xmlparser.newDocumentBuilder();
                    Document dc = dBuilder.parse(inputStream);

                    Element ele = dc.getDocumentElement();
                    ele.normalize();

                    NodeList nodeList = dc.getElementsByTagName("item");

                    for (int i=0; i<nodeList.getLength(); i++){
                        Node node = nodeList.item(i);
                        if(node.getNodeType() == Node.ELEMENT_NODE){
                            Element ele2 = (Element) node;
                            latlog = "Longitude: "+getValue("log",ele2)+"\n";
                            latlog += "Latitude: "+getValue("lat",ele2);
                        }
                    }
                } catch (Exception e){
                    e.printStackTrace();
                }
            }

            return latlog;
        }

        @Override
        protected void onPostExecute(String latlog){
            if(inputStream==null) {
                Toast.makeText(getApplicationContext(), "Didn't Work", Toast.LENGTH_SHORT).show();
            } else {
                textView.setText(latlog);
            }
        }
    }

getValue(String, Element)

private static String getValue(String tag, Element element) {
        NodeList nodeList = element.getElementsByTagName(tag).item(0).getChildNodes();
        Node node = nodeList.item(0);
        return node.getNodeValue();
    }

Answer 1

Seems issue is not in your source code, but in access to server. May be URL is wrong (typo in URL) - so check link variable value before call

URL url = new URL(link);

may be some parameters missing. And try to analyze response code:

int responseCode = htc.getResponseCode(); 
if (responseCode == HttpURLConnection.HTTP_OK) { 
    inputStream = htc.getInputStream();
    ... 
}

And probably HttpURLConnectionshould be configured likehtc.setRequestMethod("GET");` or something like that: HTTP Authentication, Proxy, Cookies and so on (see Official Documentation).